fix: improve nvim lsp usage

Signed-off-by: Lucas Sta Maria <lucas@priime.dev>

.config/nvim/lua/plugins.lua

@@ -25,7 +25,14 @@ packer.startup(function()
     use("akinsho/toggleterm.nvim")
 
     -- completion
-    use{"ms-jpq/coq_nvim",branch='coq'}
+    use("hrsh7th/cmp-nvim-lsp")
+    use("hrsh7th/cmp-buffer")
+    use("hrsh7th/cmp-path")
+    use("hrsh7th/cmp-cmdline")
+    use("hrsh7th/nvim-cmp")
+    use{"glepnir/lspsaga.nvim",branch="main"}
+    use("github/copilot.vim")
+    use("L3MON4D3/LuaSnip")
     
     -- misc
     use("davidgranstrom/nvim-markdown-preview")
@@ -115,3 +122,9 @@ vim.cmd[[
 
 -- todo-comments
 require('todo-comments').setup {}
+
+-- copilot
+vim.g.copilot_filetypes = {
+    ['*'] = false,
+    ['java'] = true,
+}